Abullet is accelerated down the barrel of a gun by hot gases produced in the combustion of gun powder. what is the average force (in n) exerted on a 0.0500 kg bullet to accelerate it to a speed of 575 m/s in a time of 2.10 ms (milliseconds)? (enter the magnitude.)

The energy equivalent of the rest mass of an electron is

Astone is thrown with a speed v0 and returns to earth, as the drawing shows. ignore friction and air resistance, and consider the initial and final locations of the stone. which one of the following correctly describes the change δpe in the gravitational potential energy and the change δke in the kinetic energy of the stone as it moves from its initial to its final location? options a.δpe = 0 j and δke = 0 j b.δpe is positive and δke is negative c.δpe = 0 j and δke is positive d.δpe is negative and δke is positive e.δpe = 0 j and δke is negative

The ability to make things happen is also called a. heat b. force c. matter d. energy